Single Layer Cell

Single Layer Cell drives are quicker but are restricted to the capacity of the size of the RAM used. Each cell on the slab of silicon (there are millions of cells on each) has an on or off state. Voltage is measured within the cell to determine it's state. Let's say this voltage is measured between 0 and 100 ma. Anywhere above 1ma is read to be on. Below 1ma is off.

IDE/PATA

The term IDE(Integrated Drive Electronics) is owned by Western Digital and most other companies use the term ATA (AT Attachment) but both IDE and ATA  mean the same thing. PATA (Parallel ATA) is the term used to describe the grey wide 80-pin cables we are used to seeing inside our PC's to connect our hard drives and CDROM drives

ATA/33 capable of 33.3 Megabits per second
ATA/66 capable of 66.6 Megabits per second
Ultra ATA/100 capable of 100 Megabits per second
Ultra ATA/133 capable of 133 Megabits per second

Please see our whitepaper for a breakdown of the different drive interfaces